JP7429565B2 - wall structure - Google Patents

Description

The present invention relates to wall structures.

Patent Document 1 discloses a technique related to a structure in which a curtain wall of a precast concrete panel is attached to a building frame using bolts, nuts, and fasteners. In this prior art, the intermediate portions of the precast concrete panel and the exterior wall panel in the vertical direction are rotatably supported by the frame.

Special Publication No. 61-30102

If a wall that is not an earthquake-resistant wall, such as a designed wall, is rigidly attached to the building frame, if the wall is highly rigid, there is a risk that the wall will inhibit the deformation of the building during an earthquake, reducing the earthquake-resistant performance of the building. .

In the technique of Patent Document 1, the precast concrete panel and the exterior wall panel are not rigidly connected to the building frame, so the wall does not inhibit the deformation of the building during an earthquake. However, because the wall is directly attached to the frame, vertical loads act directly on the wall where it is attached, resulting in stress concentration. Therefore, it may be necessary to take measures to prevent damage to the mounting portion due to stress concentration on the mounting portion of the wall. In particular, if the wall is heavy, such as a stone wall, the impact of stress concentration on the attachment area, such as damage to the attachment area, becomes significant.

SUMMARY OF THE INVENTION In view of the above-mentioned facts, an object of the present invention is to support a wall body rotatably in an out-of-plane direction while suppressing local stress concentration on the wall body.

A first aspect includes a wall, a support provided on the back surface of the wall from an upper end to a lower end, and a vertically intermediate portion of the support supported rotatably in an out-of-plane direction by a frame. and an end attachment mechanism that attaches at least one of the upper end and the lower end of the support to the frame while allowing movement in the vertical direction and in-plane direction. It is.

In the wall structure of the first aspect, the intermediate portion attachment mechanism allows the intermediate portion of the support provided on the back surface of the wall to be rotatably supported by the frame in an out-of-plane direction. The end attachment mechanism attaches at least one of the upper end and the lower end of the support to the frame while allowing movement in the vertical direction and in-plane direction.

In this way, since the wall is attached to the building frame without being in rigid contact with it, the wall does not hinder the deformation of the building during an earthquake.

In addition, the vertical middle part of the support provided on the back of the wall is supported by the frame so that it can rotate in an out-of-plane direction, and serves as a rotation fulcrum, so the support can be rotated by supporting the upper or lower end. Compared to the case where the end attachment mechanism is used as a fulcrum, the force acting on the end attachment mechanism and the bending stress acting on the support are suppressed.

Here, if no support is provided on the back surface of the wall, stress due to the vertical load will be concentrated at the portion of the wall where it is attached to the frame.

On the other hand, by providing a support on the back surface of the wall from the upper end to the lower end and supporting this support on the frame, local stress concentration on the wall can be suppressed.

Therefore, the wall can be rotatably supported by the frame while suppressing local stress concentration on the wall.

A second aspect is the wall structure according to the first aspect, wherein the intermediate attachment mechanism has a mounting part that protrudes from the support in an out-of-plane direction and is placed on the frame. .

In the wall structure of the second aspect, the mounting portion protruding from the support is placed on the frame, so that the support can be easily supported by the frame so as to be rotatable in an out-of-plane direction.

In a third aspect, the end attachment mechanism includes a shaft member provided on the support body and having an axial direction in the vertical direction, and a long hole provided on the frame body and elongated in the left-right direction through which the shaft member is inserted. The wall structure according to the first aspect or the second aspect, wherein the wall structure has a formed insertion portion.

In the wall structure of the third aspect, by inserting a shaft member provided in the support body whose axial direction is in the vertical direction into a long hole elongated in the left and right direction formed in the insertion portion provided in the building frame, it is possible to easily The support body is attached to the frame body so as to allow vertical and in-plane movement while restricting rotation of the wall body about the intermediate attachment mechanism.

A fourth aspect is the wall structure according to any one of the first to third aspects, wherein the wall is a stone wall.

In the wall structure of the fourth aspect, even if the wall is a heavy and hard stone wall, it is provided so as not to inhibit the deformation of the building during an earthquake. Since the vertical middle part of the support provided on the back of the wall is supported and used as a rotational fulcrum, even if the wall is a heavy and hard stone wall, the force acting on the end attachment mechanism and the support will be reduced. This is preferable because the bending stress that acts is suppressed.

According to the present invention, the wall can be rotatably supported by the frame while suppressing local stress concentration on the wall.

FIG. 3 is a side view schematically showing a side surface of the wall structure viewed from the X direction. It is a front view of the wall structure seen from the Y direction. (A) is a plan view partially showing the upper mechanism part of the end attachment mechanism section, and (B) is a front view partially showing the upper mechanism section. (A) is a front view showing a lower mechanism section of the end attachment mechanism section partially in section, and (B) is a plan view partially in section.

<Embodiment>
A wall structure according to an embodiment of the present invention will be described. Note that the vertical direction is defined as the Z direction, and the two mutually orthogonal directions in the horizontal direction orthogonal to the vertical direction are defined as the X direction and the Y direction. Further, the out-of-plane direction of the wall body 50, which will be described later, is the Y direction, the view from the Y direction is a front view, and the X direction in the front view is a left-right direction. In addition, in FIG. 2, the wall 50 is illustrated by an imaginary line (two-dot chain line).

[composition]
First, the configuration of the wall structure of the first embodiment will be described.

As shown in FIGS. 1 and 2, the wall structure 100 includes a wall 50, a support 110, an intermediate attachment mechanism 120 (see FIG. 1), and an end attachment mechanism 130. There is.

The wall body 50 of this embodiment is a stone wall made of stone such as Ryukyu limestone, which has a high design quality, and is a designed wall. The height of the wall 50 in the vertical direction of this embodiment corresponds to multiple layers of the building 10, which is two layers in this embodiment. Further, the support body 110 is provided extending from the upper end portion 50A to the lower end portion 50B of the back surface 52 (see FIG. 1) of the wall body 50. Note that the vertically intermediate portion of the wall 50 is referred to as an intermediate portion 50C.

As shown in FIG. 2, the support body 110 of this embodiment is composed of a steel frame 112, reinforcing bars 114, and a brace material 116. The steel frames 112 constituting the support body 110 are arranged in a lattice shape. The reinforcing bars 114 are provided along the vertical direction, spaced apart from each other in the left-right direction, and are connected to the steel frame 112, respectively. Brace material 116 is provided within the grid of steel frame 112. Note that the configuration of the support body 110 is one example, and is not limited to such a configuration.

Further, the support body 110 is joined to the back surface 52 (see FIG. 1) of the wall body 50. Note that although any method may be used to join the two, in this embodiment, they are joined as follows.

As shown in FIG. 1, anchor bolts 70 are embedded in a plurality of locations in the wall 50. Anchor bolt 70 projects from rear surface 52. The support body 110 is joined to the back surface 52 of the wall body 50 by bolting the plurality of anchor bolts 70 to the steel frame 112 (see FIG. 2) of the support body 110. In the present embodiment, the anchor bolt 70 is arranged at least in the vertical direction of the wall body 50, including the upper end 50A, the lower end 50B, the intermediate part 50C, between the upper end 50A and the intermediate part 50C, and between the intermediate part 50C and the lower end 50B. embedded between.

As shown in FIG. 1, the intermediate part attachment mechanism part 120 can rotate the vertical intermediate part 110C of the support body 110 joined to the back surface 52 of the wall body 50 to the frame 20 of the building 10 in an out-of-plane direction. It is supported by Further, the end attachment mechanism section 130 attaches the upper end 110A and the lower end 110B of the support body 110 to the frame 20 while allowing movement in the vertical direction and in-plane direction, respectively.

In addition, in this embodiment, the support body 110 provided on the back surface 52 of the wall body 50 is a beam 32 joined to the end of the slab 22 that constitutes the ceiling of the second layer 12 that constitutes the frame 20 of the building 10. , are attached to beams 31 joined to the ends of slabs 21 that make up the ceiling of the first layer 11 and slabs 30 that make up the floor of the first layer 11 .

The intermediate section attachment mechanism section 120 has a mounting section 122 that protrudes in the Y direction from the intermediate section 110C of the support body 110, and this mounting section 122 is mounted on the beam 31.

As shown in FIGS. 1 and 2, the end attachment mechanism section 130 includes an upper mechanism section 140 (see also FIG. 3) that attaches the upper end section 110A of the support body 110 to the upper beam 32 of the second layer 12, and a support section 140 (see also FIG. 3). It has a lower mechanism part 160 (see also FIG. 4) that attaches the lower end part 110B of the body 110 to the slab 30 that constitutes the floor part of the first layer 11.

As shown in FIGS. 1 and 3, the upper mechanism section 140 includes an upper shaft member 142 and an upper insertion section 150. The upper shaft member 142 is provided at the upper end portion 110A (see FIG. 1) of the support body 110, and projects upward. The upper insertion part 150 is composed of a vertical plate part 152 and a horizontal plate part 153, and has an L-shape when viewed from the side in the X direction. The vertical plate portion 152 of the upper insertion portion 150 is fixed to the side surface 33 of the beam 32. The horizontal plate part 154 of the upper insertion part 150 has a long hole 156 that is long in the X direction (left-right direction), and the upper shaft member 142 is inserted through the long hole 156 .

As shown in FIGS. 1 and 4, the lower mechanism section 160 includes a lower shaft member 162 and a lower insertion section 170. The lower shaft member 162 is provided at the lower end portion 110B (see FIG. 1) of the support body 110 and protrudes downward. The lower insertion part 170 is composed of a plate-shaped fixing part 172 and a box-shaped part 174. The fixed part 172 is fixed to the slab 30. An elongated hole 176 that is long in the left-right direction is formed in the upper surface portion 175 of the box-shaped portion 174, and the lower shaft member 162 is inserted into this elongated hole 176.

In addition, as shown in FIG. 1, in the present embodiment, the support body 110 has an upper end portion 110A in contact with or close to the side surface 33 of the beam 32, and an intermediate portion 110C in contact with or close to the side surface 34 of the beam 31. .

[Action and effect]
Next, the functions and effects of this embodiment will be explained.

By placing the mounting portion 122 of the intermediate portion attachment mechanism portion 120 on the beam 31, the intermediate portion 110C of the support body 110 is supported by the beam 31 so as to be rotatable in an out-of-plane direction.

By inserting the upper shaft member 142 of the upper mechanism section 140 into the long hole 156 of the upper insertion section 150 fixed to the beam 32, the upper end section 110A of the support body 110 is allowed to move in the vertical direction and in-plane direction. It is attached to the beam 32. In addition, by inserting the lower shaft member 162 of the lower mechanism section 160 into the elongated hole 176 of the lower insertion section 170 fixed to the slab 30, the lower end section 110B of the support body 110 moves in the vertical direction and in-plane direction. It is attached to the slab 30 to allow movement. As a result, the support body 110 is attached to the frame body 20 in a manner that allows movement in the vertical direction and in-plane direction while restricting rotation of the wall body 50 using the mounting portion 122 as a fulcrum.

In this way, the wall 50 is attached to the beams 32, 31 and the slab 30 that constitute the frame 20 of the building 10 without being rigidly connected, so the wall 50 does not inhibit the deformation of the building 10 during an earthquake.

Further, since the vertically intermediate portion 110C of the support body 110 provided on the back surface 52 of the wall body 50 is rotatably supported in an out-of-plane direction and used as a rotation fulcrum, the upper end portion 110A or the lower end portion 110B of the support body 110 Compared to the case where the rotation support point is the rotational fulcrum, the force acting on the upper mechanism section 140 and the lower mechanism section 160 of the end attachment mechanism section 130 and the bending stress acting on the support body 110 are suppressed.

Here, if the support body 110 is not provided on the back surface 52 of the wall body 50, stress due to the vertical load will concentrate on the attachment portion of the wall body 50 to the frame body 20.

In contrast, by providing a support 110 on the back surface 52 of the wall 50 from the upper end 110A to the lower end 110B and supporting the support 110 on the frame 20, local stress on the wall 50 can be reduced. Concentration is suppressed.

Therefore, the wall 50 can be rotatably supported by the frame 20 in an out-of-plane direction while suppressing local stress concentration on the wall 50.

Further, by placing the mounting portion 122 protruding from the intermediate portion 110C of the support 110 on the beam 31, the support 110 can be easily supported by the frame 20 so as to be rotatable in an out-of-plane direction.

Further, an upper shaft member 142 and a lower shaft member 162, which are provided on the support body 110 and whose axial direction is the vertical direction, are inserted into the long hole 156 of the upper insertion portion 150 and the long hole 176 of the lower insertion portion 170, respectively. By doing so, the support body 110 can be easily attached to the frame body 20 so as to allow movement in the vertical direction and in-plane direction while restricting rotation of the wall body 50 about the mounting part 122 of the intermediate part attachment mechanism part 120 as a fulcrum. It will be done.

Further, in this embodiment, the wall body 50 of this embodiment is a heavy and hard stone wall, but as described above, this is suitable because it is provided so as not to inhibit the deformation of the building 10 during an earthquake.

Further, as described above, since the vertically intermediate portion 110C of the support 110 provided on the back surface 52 of the wall 50 is used as a rotation fulcrum, even if the wall 50 is a heavy and hard stone wall, the end attachment mechanism This is preferable because the force acting on the upper mechanism section 140 and the lower mechanism section 160 of the section 130 and the bending stress acting on the support body 110 are suppressed.

Moreover, in this embodiment, the wall body 50 is provided spanning the first layer 11 and the second layer 12. Therefore, for example, no joint is formed in the intermediate portion 50C, as in the case where the wall 50 is divided into upper and lower portions at the intermediate portion 50C and attached to the first layer 11 and the second layer 12, respectively. Therefore, deterioration in design quality due to the formation of joints in the wall body 50 is prevented.

<Others>
Note that the present invention is not limited to the above embodiments.

For example, the intermediate portion attachment mechanism portion 120, the upper side mechanism portion 140, and the lower side mechanism portion 160 of the end portion attachment mechanism portion 130 in the above embodiment are merely examples, and the present invention is not limited thereto. The intermediate portion attachment mechanism may be any mechanism that allows the vertical intermediate portion of the support body to be rotatably supported by the frame in an out-of-plane direction. The end attachment mechanism may be any mechanism that attaches at least one of the upper end and the lower end of the support to the frame while allowing movement in the vertical direction and in-plane direction. Further, the support body may be attached to a frame other than a beam or a slab.

In addition, when the wall body is provided across multiple layers, it is desirable to provide an end attachment mechanism section at both the upper end and the lower end of the support.

Further, for example, in the above embodiment, the wall body 50 is a stone wall, but the present invention is not limited to this. It may be a wall other than a stone wall. To explain from another point of view, the present invention can be applied to all wall bodies other than earthquake-resistant walls such as decorative walls.

Further, for example, the structure of the support body 110 and the structure of joining the support body 110 to the back surface 52 of the wall body 50 are not limited to the above embodiments. The structure of the support body 110 and the bonding structure of the support body 110 to the back surface 52 of the wall body 50 may be any structure as long as local stress concentration on the wall body 50 is suppressed. . To explain from another point of view, by supporting and attaching a support provided from the upper end to the lower end of the back of the wall to the frame, the wall It is only necessary to suppress local stress concentration.

Moreover, it is applicable to a wall body provided across three or more layers, and also to a wall body provided in only one layer.

Furthermore, the invention may be implemented in various ways without departing from the spirit of the invention.

10 Building 20 Frame 30 Slab 31 Beam 32 Beam 50 Wall 50A Upper end 50B Lower end 50C Intermediate section 52 Rear surface 100 Wall structure 110 Support body 110A Upper end 110B Lower end 110C Intermediate section 120 Intermediate section attachment mechanism section 122 Placement section 13 0 End attachment mechanism section 140 Upper mechanism section 142 Upper shaft member (an example of shaft member)
150 Upper insertion part (an example of insertion part)
156 Long hole 160 Lower mechanism part 162 Lower shaft member (an example of shaft member)
170 Lower insertion part (an example of insertion part)
176 long hole

Claims (6)

A support body including a steel frame ,
a wall body whose back surface is joined to the steel frame constituting the support body with anchor bolts at multiple locations from the upper end to the lower end;
an intermediate part attachment mechanism part that supports the vertically intermediate part of the support body on the frame so as to be rotatable in an out-of-plane direction and movable in a lateral direction ;
an end attachment mechanism that attaches at least one of the upper end and the lower end of the support to the skeleton while allowing movement in the vertical direction and in-plane direction;
Wall structure with. The intermediate part attachment mechanism has a mounting part that protrudes from the support in an out-of-plane direction and is mounted on the frame.
A wall structure according to claim 1. The end attachment mechanism section is
a shaft member provided on the support body and having an axial direction in the up-down direction;
an insertion portion provided in the body and having a long hole elongated in the left-right direction through which the shaft member is inserted;
have,
The wall structure according to claim 1 or claim 2. the wall is a stone wall;
The wall structure according to any one of claims 1 to 3. The anchor bolt is embedded in at least an upper end portion, a lower end portion, an intermediate portion, between the upper end portion and the intermediate portion, and between the intermediate portion and the lower end portion in the vertical direction of the wall body, and is embedded in the wall body. protrudes from the back of the
The wall structure according to any one of claims 1 to 4. The support is
The steel frame arranged in a grid pattern;
Reinforcing bars provided along the vertical direction and spaced apart from each other in the left and right direction;
A brace member provided within the lattice made of the steel frame,
is composed of
The wall structure according to any one of claims 1 to 5.